. >> melting on the greenland ice sheet is a beg concern. bah that is moving water that is currently, thawing the ice moving it into the ocean. if that continues it will have an impact on people who live in coastal regions. >> jen jer zee, abc news, new york. >>> there is a lot of folks out there think, global warming or climate change as the it is better called is a hoax or need study. look at pieces like that. and the numbers. i don't know. it is not global warming or climate change someone explain to me what it is then. that's all. >> really truly only been tracking this since 1976 i think it is. >> numbers since then are pretty alarming. >> we are talking about what, 46 years, as opposed to thousand of years. >> but imagine itch the rate of the last, 46 years lasts 1,000 years what will our planet look look if it is exists. >> dooms day. doomsday. the world is ending on december 21. >> all right. we are getting a stunning new look right now at our planet while it exists from way up in space. nasa just released these pretty spectacular im